"嘴巴"用英语称为"mouth".
来源：该词源自古英语"mūð"，最早出现在印欧语系中。
英文例句:
He has a big mouth. (他有一张大嘴巴。)
She can't keep her mouth shut. (她说话总是没有审查。)
He put his foot in his mouth. (他说了一些不该说的话。)
中文翻译:
He has a big mouth. (他有一张大嘴巴。)
She can't keep her mouth shut. (她说话总是没有审查。)
He put his foot in his mouth. (他说了一些不该说的话。)